x^4-6x^2=5

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Solution for x^4-6x^2=5 equation:


Simplifying
x4 + -6x2 = 5

Reorder the terms:
-6x2 + x4 = 5

Solving
-6x2 + x4 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + -6x2 + x4 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + -6x2 + x4 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -6x2 + 5 + x4 = 0 + 5

Reorder the terms:
-5 + 5 + -6x2 + x4 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -6x2 + x4 = 0 + 5
-6x2 + x4 = 0 + 5

Combine like terms: 0 + 5 = 5
-6x2 + x4 = 5

The x term is -6x2.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x2 + 9 + x4 = 5 + 9

Reorder the terms:
9 + -6x2 + x4 = 5 + 9

Combine like terms: 5 + 9 = 14
9 + -6x2 + x4 = 14

Factor a perfect square on the left side:
(x2 + -3)(x2 + -3) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x2 + -3) equal to 3.741657387 and -3.741657387.

Subproblem 1

x2 + -3 = 3.741657387 Simplifying x2 + -3 = 3.741657387 Reorder the terms: -3 + x2 = 3.741657387 Solving -3 + x2 = 3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x2 = 3.741657387 + 3 Combine like terms: -3 + 3 = 0 0 + x2 = 3.741657387 + 3 x2 = 3.741657387 + 3 Combine like terms: 3.741657387 + 3 = 6.741657387 x2 = 6.741657387 Simplifying x2 = 6.741657387 Take the square root of each side: x = {-2.596470178, 2.596470178}

Subproblem 2

x2 + -3 = -3.741657387 Simplifying x2 + -3 = -3.741657387 Reorder the terms: -3 + x2 = -3.741657387 Solving -3 + x2 = -3.741657387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x2 = -3.741657387 + 3 Combine like terms: -3 + 3 = 0 0 + x2 = -3.741657387 + 3 x2 = -3.741657387 + 3 Combine like terms: -3.741657387 + 3 = -0.741657387 x2 = -0.741657387 Simplifying x2 = -0.741657387 Reorder the terms: 0.741657387 + x2 = -0.741657387 + 0.741657387 Combine like terms: -0.741657387 + 0.741657387 = 0.000000000 0.741657387 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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